As-Sāffāt - 19

﴿فَإِنَّمَا هِيَ زَجْرَةٌ وَاحِدَةٌ فَإِذَا هُمْ يَنْظُرُونَ﴾

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(19) It will be only one shout, and at once they will be observing.